摘要
针对一类有限维多输入多输出线性时不变系统,提出了一种调节输出通道增益/相角裕度的方法。采用连续线性二次型调节器理论和周期控制方法设计一个可被计算机直接执行的线性周期控制器。理论证明该控制器可同时在系统所有反馈控制回路的输出通道实现任意大的增益裕度和直到90°的相角裕度,且系统输出采样间隔性能良好。仿真结果表明了所设计控制器的有效性。
For the finite-dimensional multiple input multiple output （MIMO） linear time-invariant system, a new method to tune gain/phase margins in the output channels is presented. By using the theory of continuous-time linear quadratic regulator （LQR） and the method of periodic control, a linear periodic controller which is easy to implement is designed. It is proved that the controller can simultaneously provide gain margins as large as desired and phase margins of up to 90° in the output channels of all feedback control loops and has a satisfactory inter-sample performance. Simulation results show the effectiveness of the proposed control law.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2012年第2期353-357,共5页
Systems Engineering and Electronics
基金
国家自然科学基金(60904038)资助课题
关键词
周期控制
线性周期控制器
线性二次型调节器
增益裕度
相角裕度
periodic control
linear periodic controller
linear quadratic regulator （LQR）
gain margin
phase margin
